Albert zollee



(No Model.)

A. ZOLLER.

WRENCH FOR BUNG BUSHBS.

No. 251,333; I

Patented Dec. 20,1881;

\B-Wmeeses.

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UNITED STATES PATENT OFFICE.

ALBERT ZOLLER, OF NENV YORK, N. Y.

WRENCH FOR BUNG-BUSHES.

SPECIFICATION forming part of Letters Patent No. 251,333, dated December 20, 1881.

Application filed November 15, 1881. (No model.) i

To all whom it may concern:

Be it known that I, ALBERT ZOLLER, a citizen of the United States, residing at New York, in the county and State of New York, have ininvented new and useful Improvements in Wrenches for Bung-Bushes, of which the fol lowing is a specification.

This invention relates to wrenches for the insertion and removal of bung-bushes, or the like, in barrels, casks,&c.; and it consists in the combination of a plug or wrench-head constructed with a series of eccentric faces, with shoulders at the opposite ends of the eccentric faces and with a transverse groove intersecting the eccentric faces, frictional rollers moving on the eccentric faces of the head respect ively, being fitted lengthwise between the shoulders, and a retaining-ring encompassing the rollers and having a set-screw whereby it engages thegroove of the head. This rollerretaining ring is provided with internal transverse grooves for the reception of the rollers, as hereinafter more fully set forth.

This invention is illustrated in the accompanyin g drawings, in which Figure 1 represents a side view. Fig. 2 is a cross-section on the line as a, Fig. 1, showing the inner or normal position of the rollers. Fig. 3 is a like section, showing the outer position of the rollers.

Similar letters indicate corresponding parts.

The letter A designates the wrench-head, having eccentric faces B, shoulders O, and transverse groove D. Letter E designates the frictional rollers; F, the retaining-ring; G, its set-screw, and Hits internal transverse grooves.

The head A is preferably made of tapering form, and in the upper part thereof is the usual hole for the reception of a bar or handle. (Not shown.) The eccentric faces B of the head entirely surround it, and in this example they are flat; but, if desired,they may be curved in an appropriate manner. The shoulders O of the head are at the opposite ends of its eccentric faces B, while the transverse groove D thereof intersects such faces, the groove being circular.

The rollers E are opposite to the eccentric faces B of the head, respectively, in superficial contact therewith, and are retained in position by the ring F, which encompasses them, as shown, the length of the rollers being approximately equal to that of the eccentric faces, so that they fit lengthwise between the shoulders O, and are held against cndwise move ment by that means.

The set-screw Gr passes through the ring F and enters the groove D at a point between two of the rollers, thus firmly holding the ring in place on the rollers, and at the same time allowing the independent movement of the head.

The grooves H of the retaining-ring F are opposite to the rollers E, respectively, and are made of a width similar to or greater than the diameter of the rollers, so that they are adapted to receive the rollers within them.

In applying the wrench to use, the head A is inserted into the bush or other article from its lower end, so as to bring the rollers E into frictional contact with the inner surface of the bush, and then the head is turned vin one or the other direction, according to the direction in which it is desired to turn the bush. By the action of the eccentric faces B of the head the rollers E are now forced outward from the center of the head, moving on the eccentric faces and entering the grooves H, and the rollers being thus tightly wedged against the bush, the latter is caused to turn with the head.

It will be noticed that by making the eccentric faces, with their rollers, to entirely surround the head the wrench acts uniformly on all parts of the bush, and by this means the danger of twisting the bush and affecting its original annular circumference is avoided.

I am aware that a wrench has heretofore been constructed with a single roller moving on an eccentric face of the wrench-head, and I do not claim such as my invention.

-What I claim as new, and desire to secure by Letters Patent, is-

1. The combination, substantially as hereinbef0resetforth,of the wrench-head,constructed with a series of eccentric faces entirely surrounding it, with shoulders at the opposite ends of the eccentric facesand with a transverse groove intersecting the eccentric faces, frictional rollers moving on the eccentric faces of the head respectively, being fitted lengthwise between the shoulders, and a retaining-ring encompassing the rollers and having a setscrew whereby it engages the groove of the head.

2. The combination, substantially as hereinbefore setforth of the wrench-head, constructed with a series of eccentric faces entirely surronndingit, with shoulders at the opposite ends of the eccentric faces and with a transverse groove intersecting the eccentric faces, frictional rollers moving on the eccentric faces of the head respectively, being fitted lengthwise between the shoulders, and a retaining-ring encompassing the rollers having a set-screw wherebyit engages the groove of the head, and

having transverse grooves for the reception of to the rollers.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

ALBERT ZOLLER. [L. s.]

Witnesses W. HAUFF, (Jr-ms. \VAHLERS. 

